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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	netdev@vger.kernel.org, "David S . Miller" <davem@davemloft.net>,
	linux-arm-kernel@lists.infradead.org,
	linux-amlogic@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	Dan Carpenter <dan.carpenter@oracle.com>
Subject: [PATCH AUTOSEL 4.14 306/371] net: stmmac: dwmac-meson8b: Fix signedness bug in probe
Date: Thu, 16 Jan 2020 12:22:58 -0500
Message-ID: <20200116172403.18149-249-sashal@kernel.org> (raw)
In-Reply-To: <20200116172403.18149-1-sashal@kernel.org>

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit f10210517a2f37feea2edf85eb34c98977265c16 ]

The "dwmac->phy_mode" is an enum and in this context GCC treats it as
an unsigned int so the error handling is never triggered.

Fixes: 566e82516253 ("net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
index 8be4b32544ef..d71d3c1c85ee 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
@@ -285,7 +285,7 @@ static int meson8b_dwmac_probe(struct platform_device *pdev)
 
 	dwmac->pdev = pdev;
 	dwmac->phy_mode = of_get_phy_mode(pdev->dev.of_node);
-	if (dwmac->phy_mode < 0) {
+	if ((int)dwmac->phy_mode < 0) {
 		dev_err(&pdev->dev, "missing phy-mode property\n");
 		ret = -EINVAL;
 		goto err_remove_config_dt;
-- 
2.20.1


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Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116172403.18149-1-sashal@kernel.org>
2020-01-16 17:21 ` [PATCH AUTOSEL 4.14 198/371] pwm: meson: Consider 128 a valid pre-divider Sasha Levin
2020-01-16 17:21 ` [PATCH AUTOSEL 4.14 199/371] pwm: meson: Don't disable PWM when setting duty repeatedly Sasha Levin
2020-01-16 17:21 ` [PATCH AUTOSEL 4.14 207/371] arm64: dts: meson: libretech-cc: set eMMC as removable Sasha Levin
2020-01-16 17:22 ` Sasha Levin [this message]
2020-01-16 17:23 ` [PATCH AUTOSEL 4.14 335/371] arm64: dts: meson-gxl-s905x-khadas-vim: fix gpio-keys-polled node Sasha Levin

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